Psyche.
Agree. I hold A for Audi in high regard.
I remember once I had an MGB and it had a thump that happened every single time you went over a bad bit of road.
It was driving me nuts and after trying absolutely everything, including a replacement axle (!), it turned out to be a big screwdriver that I'd left in the boot. Every time we hit a bump, the handle smacked of the inside of the rear wheelarch....
It ran great with all the work I'd done, including taking the 'driver out.
'Straight arms and drop links' is going to cost about £430.